[1.0.0.194] City Multiple Attacks Exploit

Players A and B are at war with player C. C has units within range of A's city. A fires city defenses on the unit. A and B being allies, A transfers control of the city to B. B is now able to fire the city defenses on C's units. B now transfers control of the city back to A, who is again able to fire city defenses on player C. This can go on indefinitely.